News Release

Five9 Appoints CFO

Pleasanton, Calif. (September 20, 2004) — Five9, Inc., the leading provider of hosted contact center solutions, today announced the appointment of Bob Murphy as Vice President and Chief Financial Officer, reporting to President and CEO Brian Silverman. Murphy will oversee the company's finance and accounting functions and help develop and implement a long-term growth strategy for the company's domestic and international expansion. In addition, he will direct the legal, human resources and administrative functions for the company. Murphy comes to Five9 with more than 25 years of experience managing early-stage companies in rapid growth and turnaround environments, strategic planning, raising capital and financial management. "The addition of Bob to our management team is strategic to the growth of our company and will undoubtedly help us achieve our goals," said Silverman. "Bob has exceptional experience and a proven track record managing companies in rapid growth environments which will make him a valuable asset to Five9." Murphy most recently served as CFO of Ventaso, Inc, a software and professional services company. While there he raised $30M in funding, helped refocus the business model to sell enterprise solutions to Fortune 1000 companies and served as interim COO while the company searched for a new CEO. Prior to Ventaso, Bob held vice president and C-level positions at several telecommunications companies, twice appearing on The Inc. 500, an annual listing of America's 500 fastest growing privately-held companies. Bob began his career as an investment banker with Birr, Wilson & Co. in San Francisco where he specialized in advising and raising capital for emerging growth companies. "Five9 has tremendous growth potential and is quickly becoming the market leader in the rapidly growing hosted contact center market," said Murphy. "This is a very exciting time for Five9 and I look forward to helping accelerate the growth of the business."About Five9, Inc.Five9 is the leading global provider of on-demand call center solutions for customer interaction management. The award-winning Five9 Virtual Call Center™ targets small- to midsized call centers, contact center operations of large enterprises, and companies that provide outsourced call center services. Companies on five continents profit from Five9's reliable, robust functionality that is fast, easy, and affordable to deploy for any call center. For more information, visit http://www.five9.com.Media ContactHeather FitzsimmonsMindShare PR+1.650.323.3045heather@mindsharepr.com